Me again...I raked most of the straw up and took it out of their coop this week, and they are obviously much happier. They run around now instead of huddling under their henhouse, and respond to visitors by coming over to the fence to see what's happening and beg for treats, instead of acting...
Hello, after reading this article, which sounded great, I seem to have made our flock very unhappy...I took the suggestion of putting a bale of straw in the coop, which they could then tear apart and spread around. The idea is something fun to do while adding a layer of insulation to the coop...